The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 23, 1994
Filed:
Dec. 15, 1992
Applicant:
Inventors:
Kazuhiro Komori, Kodaira-shi, Tokyo, JP;
Satoshi Meguro, Hirai, Hinode-machi, Nishitama-gun Tokyo, JP;
Takaaki Hagiwara, Hirai, Hinode-machi, Nishitama-gun, Tokyo, JP;
Hitoshi Kume, Musashino-shi, Tokyo, JP;
Toshihisa Tsukada, Musashino-shi, Tokyo, JP;
Hideaki Yamamoto, Tokorozawa-shi, Saitama, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
437 43 ; 437 44 ; 437 45 ; 437 29 ; 437 30 ; 437 52 ;
Abstract
This invention discloses EEPROM which increases an erasing voltage V.sub.pp to be applied in a data write cycle by increasing an avalanche breakdown voltage between a source region and a semiconductor substrate in order to improve erasing efficiency, and employs a structure which strengthens the electric field at the edge of a drain region in order to let hot carrier be easily generated and to improve writing efficiency.